The basic search box is provided at the top of all pages in PRISM by clicking on the magnifying glass. Entering terms into this search box will perform a full-text search unless syntax is used to perform a more specific query.
The magnifying glass icon will take you to a page where additional search features are available. This interface performs complex queries using Filters. A drop-down menu allows for setting the search in "All of PRISM" or just one community.
Use other filters, on the left hand side of the page, to filter your results by a variety of other facets such as date and document type.